Rotary cutter



y 1940-- J. CIARLOINEI Y 2,202,543

ROTARY CUTTER Filed Nov. 25, 1938 a a 1.9 2i 1 v 6 1-23 6 E-D PATENTOFFEGE i r K224125423,

I I .RQTAR'Y Curran '2 loseil h Ciarlone, Fitchburg Mass. h IAippl'ication'November 25, T9138 Serial No, 242,33 lzclaims. (01.146-189.

This invention relates to a cutter rotatable the arms 18 and I9 areprovided with kerfs or with a shaft which carries it and used ordinarilygrooves 20 and 2|. These grooves are arranged for cutting meat intosmall particles for use as at an angle to'the plane of that side of theknife hamburg steak, and the like. carrier and bothsets of'them at thesame angle,

The. principal objects of this invention are to which may beapproximately 20. That is, they provide such a rotary cutter with aseries of 1 slant in the direction in which the cutter is to bladesfixedly but detachably secured and adjustrotate. At the back of eachgroove is a short able; to provide each blade with an integralpordepression 22 which can be a continuation of the tion constitutinganother blade so that if there groove 2| but is used'for removal of theknives, '1 are four of the first named blades, there will be as willappear hereinafter.

eight blades altogether; to provide the second Each knifeis formed witha main part 23 and blade preferably parallel withthe next blade in aright angular part 24. Each one is provided the series, and to providethese blades all at the with a sharpened edge at the outside portion,same angle to the fiat face of the hub of the both of the sharpenededges of the knives 23 and 15 cutter so that they will cut uniformly,and to. 24 being in the same plane as that of therest of 15 provide aconvenient means for removing two the knives. Each knife also isprovided with an blades at a time from the cutter head. opening 25which, whenthe knife is in place, will Other objects and advantages ofthe invention register ith th groove 22, will appear hereinafter. Itwill be obvious, of course, that four of these :0 Reference is to be hadto the accomp nyin double knives are insertedin the four double 20drawing, in which grooves 20-2l so' that the cutter will assume the-Fig. 1 is a diametrical sectional view of a meat condition shown inFigs. 3 and 4. In this way it Cutting pp machins, illustrating s will beseen that these cutters all slant and a1- vention; though one set is atright angles to the other set,

3 is frOnt elevation of the me, showing The knives are easily put inplace in the cutter the blades; support and are fixed therein bybeingdriven into 4 is an edge View taken n t e direction f the grooves20 and 2i. On account of the fact the arrow 4 in Fig. 3; that anintegral T-shaped knife is driven into a Fig. 5 18 a front view Of apart Of the cutter T- haped groove, both 9,1; an angle to the plane 30head with the blades removed; i of the holder, they will be gripped inthe grooves Fisi a e ti n l vi w n lar e scale firmly and will not getout of place easily. As a on the line 6-'5 of Fig. 3; matter of factthe'knife, being held up against Fig. '7 is a perspective view of one ofthe blade the perforated plate I3, is held firmly in that elements whichinvolves two blades, on enlarged position. There is nothing to causethese knives 35 scale, and v a to be loosened unless the nut 26 happensto'be- Fig. 8 is a sectional view on the line 8-8 of come loosened,which is not likely. Fig. 3 showing how a blade can be removed. By thismeans a double quantity of knives is This cutter is an improvement o t eO y provided in the same area as has been used be- 2 s a a e v t 'Of the011111761 he d; they all slant forwardly and practically equally. 25 1'40 rotary hea or t e bl es. is head I0 is fore, they are held inposition very firmly and 40 mounted on a shaft 1 I which also carriesthe feed they perform the work required approximately screw I2. Theblades on the head I0 engage a; twiceas fast. They are arranged in pairsaround perforated p 13 through ch the meat is the cutter head and heldin place by the perforced, all this being located in the casing I4.forated plate. The slant of the blades keeps In this case the shaft H isprovided with a square them in sharpened condition for a long time on4,5 portion 15 located-in a q ub It, which co-naccount of workingagainst thisfiat perforated stitutes the means for securing it to theshaft plate. I 3 and transmitting the rotation of the shaft to When itis desired to take the cutter out and the blades. remove the blades, atool 21 is employed which The hub I5, is integral with a knife carrierl1. enters the groove 22 and the perforation 25 in 5 This knife carrierit will be observed, is provided the knife, releases the knife veryreadily, and alwith four radial arms I8 project ng from the corlows itto be removed. Of course, instead of 'a ners of thehub, I6 and on theseradial arms'are perforation, it could be replaced by a notch exarms ISin each case which project parallel to tending inwardly from the bottom.

the next arm. On the cutting side of the knife Having thus described myinvention. and the of said hub and slanted to a material angle from theplane of the face of the cutter and provided with an equal number ofseries of intersecting grooves extending at right angles to said first.

named grooves and a series of four blades fitting in the first namedradial grooves, each blade having an integral cutting portion fitting inthe sec ond set of grooves, the second series of grooves extendinginwardly at the same angle, so that both sets of four blades each willbe located at the same angle to the face of the cutter.

2. A rotary cutter for a meat grinding machine having a polygonal hubfor fitting on a polygonal part of the operating shaft and provided withradial projections from the corners of said hub, each projection havingin the plane thereof a radial groove extending from the corner of saidhub and provided with an equal number of intersecting grooves extendingat equal angles to said first named grooves, a groove in each case onopposite sides of the first named groove extending to the opposite endof the arm, and a series of blades fitting in the first named radialgrooves, each blade having an integral portion fitting in the second setof grooves, the first set of blades each having an opening therethroughon the-side opposite the second set of blades, and the correspondingprojections each having a further groove alining with each of saidholes, for receiving a tool, for releasing the blades.

JOSEPH CIARLONE.

